<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <script type="text/javascript" src="jquery-1.9.1.min.js"></script>

    <script>
        $(document).ready(function () {
           $("button").bind(("click"),function () {
             $("#abc").slideToggle();
           });
        });


    </script>

</head>
<body>
    <div id="abc" > this is test demo </div>
<button type="button">按一下</button>
</body>


</html>